Peters



3mm @twine DEVOL-SON WEAVER,

OF ANAMOSA, IOWA.

Letters Patent No. 89,718, dated May 4,1869.

IMPROVEMENT IN DRIVE-WELL POINT.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom 'it may concern Be it known that I, DEvoLsoN WEAVER, ofAnamosa, in the county of Jones, and State of Iowa, have invented a newDriving-Well Point; and I do hereby declare that the following is a fulland exact description thereof, reference being had to the accompanyingdrawings, and to the letters of reference marked thereon.

This invention consists of an improved point for drive-wells, theconstruction and arrangement of which are such that the bottom of thetube may be opened or closed at pleasure, for the purpose of admittingor eX- cluding earth and sand, it being also so constructed that whenclosed, water is admitted freely, while earthy matter is excluded, aswill be fully described hereinafter.

In the drawingsl Figure l represents an elevation of the point or headproper.

'igure 2, a section of the same through the line a b, g. 1

Figure 3, an elevation of the section of tube, through which the wateris admitted.

Figure 4, a view of one of the ribs detached.

Figure 5, a View of the tube, partially wound with' wlre.

Figure 6, a view of the point complete.

Figure 7, a section through the line E F, iig. 6; and

Figure 8, a section through the line C D, iig. 6.

To enable those skilled in the art to make and use my invention, I willnow proceed to describe the construction and operation of the same.

The length 'of this point, from its'counection with the main tube to itsextreme end, is usually about eighteen inches, but it may of course bevaried, if necessary. Y

The head or point proper, A, is constructed of solid cast-iron, and isusually about three inches long.

It is provided with a ribbed shank, A', securely attached thereto, as isclearly shown in iig. l.

This shank is securely attached to the tubo-B, iig.

. 3, by means of a pin, which ispassed through it when placed iuposition, the ends of which project outward, and have a limited movementin the slots bl b.

The tube B consists of a suitable piece of pipe, perforated at regularintervals, and provided with collars ateach end.

Between the rows of perforations are placed the ribs or strips Bl, asshown'in g. 5.

Whenthe tube is thus prepared, it is tightly wound with galvanized wire,B2, of from No. 10 to No. l5v size, by which means a perfect screen isobtained.

The tube B, when wound, is smaller in diameter than the head A and themain tube, by which construction itis securely protected from contactwith the y is then drawn back a short distance, the head A, however,remaining fixed, being rmly held in place by adhesion.

The necessary play to accomplish this result is provided for by thearrangement of the slots b in the tube B.

By this arrangement, the bottom of the tube B is partially opened, asthe shank A is grooved for this purpose;

By now operating the pump, the loose earth and sand may be all drawninto the tube and discharged out of the mouth, by which means a cavityis formed about the bottom of the tube in which the water can collect.By depressing the tube again, this opening is entirely closed, the headA fitting tightly against the bottom of tube B.

The pump is now ready for use, and no water can pass into the tubeexcept through the wire screen.

By this construction and arrangement, a simple but desirable point isproduced, it being easily constructed and very durable. a l

Having thus fully described my invention,

What I claim, and desire to secure by Letters Patent of the UnitedStates, is-

The head or point A, constructed as described, and provided with aribbed shank, A', in combination with tube B, perforated and furnishedwith strips B, said tube being Wound with wire, all arranged to operateas and for the purpose set forth.

Dated April 9, 1868. i

Witnesses: DEVOLSON WEAVER.

J. L. SHUAN,

HARRY N. SALns

